The invention relates to a bicycle frame which consists of an individual monolithic piece made of a magnesium alloy and which is produced using a casting method, comprising: a first frame section (1) in which a first seat (1a) is provided and which is suitable for receiving the tube (2) that supports the bicycle saddle; a second frame section (3) which is connected to the first frame section (1); and a third frame section (5) which connects the first (1) and the second frame section (3) together. Additionally, the region in which the second (3) and the third frame section (5) are connected together is provided with a second seat (3a) which is suitable for rotatably receiving a connection body (4) that connects the bicycle handlebar and the bicycle fork, wherein the cross-sections of the first frame section (1) are open and thin-walled apart from where the first seat (1a) is present, and the cross-sections of the second frame section (3) and the cross-sections of the third frame section (5) are open and thin-walled apart from where the second seat (3a) is present. The invention is characterized in that each of the aforementioned open and thin-walled cross-sections of the first (1), second (3), and third frame section (5) has edges and one single open side which faces outwards with respect to the bicycle frame.
FAHRRADRAHMEN
BICYCLE FRAME
CADRE DE VÉLO
26.07.2023
Patent
Elektronische Ressource
Deutsch
IPC: | B62K Fahrräder , CYCLES |